keith had 8 1/2 cups of flour. He used 5 2/3 cups to make bread. How many cups of flour does he have left

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To solve this you must subtract the two numbers, first you would convert them both to improper fractions (17/2 & 17/3), then you would multiply the numerators and the denominators to have the same denominator. (51/6 & 34/6), Lastly, you would subtract the numerators, and keep the denominators (51-34=17) The answer is 17/6, however, most answers would prefer 2 5/6 (They are the same answer)

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